JPS6040829B2 - Raw chestnut peeling method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for peeling raw chestnuts.

In general, the astringent skin of chestnuts is difficult to separate, and this tendency is particularly strong in chestnuts called ``jehongri.'' For this reason, after peeling off the hard skin of chestnuts, the chestnuts are cut into pieces using a convenient tool such as a knife. The astringent skin was peeled off by hand, one by one.

However, such manual peeling of the astringent skin not only requires skill, but also requires manpower and time, and there is a limit to the improvement in the efficiency of the entire peeling process. Therefore, the present invention
In view of the above points, we would like to provide a raw millet peeling method and device that can easily peel a large amount of raw chestnuts in a short time by mechanizing the process of peeling both the hard skin and the astringent skin. An embodiment thereof will be described below based on the drawings.

In the figure, reference numeral 1 denotes a conveying device for conveying raw millet quantitatively sent out from a hopper 2 to the next process, and above and below the wire mesh belt 3, heating devices facing the same belt 3 are installed, for example, gas burner machines. 4 are arranged.

Therefore, the raw chestnuts sent sequentially by the transport device 1 are
It is rapidly heated directly by this gas burner machine 4, that is, by its direct flame. The heating temperature and heating time at this time are determined relatively, and for example, when the heating temperature is 600 qo to 80 pi○, the heating time is preferably about 1 sand to 2 lightness; When heating at a temperature higher than that, the heating time should be shortened. and,
When raw millet is heated rapidly in this manner, the moisture in the grain evaporates and a water film is formed between the grain and the astringent skin that covers the grain, making it easy for the astringent skin to peel off.

- When the astringent skin becomes easy to peel off, the medicinal herb is immediately sent to the peeling device 6 via the chute 5.

The peeling device 6 is disposed so as to face a peeling machine 7 formed of a heat-resistant hard rubber material and a scraping surface 8 of the peeling machine 7 with a required gap therebetween, for example. and a roller 9.

The roller 9 is entirely or at least its surface made of a heat-resistant and highly elastic material, such as a soft rubber material, and has a drive shaft 1 and a sliding key 1.
1 is fixed, and is capable of rotational movement as well as sliding movement in the axial direction.

A pair of swash plate cams 13 and 14 are fixed with bolts 15 to both sides of the roller 9 so that the cam surfaces 12 are parallel to each other. Fixed guide cover 1 that guides and regulates the rotation of
6 and 17 are in contact with each other. Therefore, for example, the second
As shown in FIG. As a result, the entire roller 9 is gradually moved to the right in the figure, and the rotation angle of the plate cams 13 and 14 is 1 as shown in B in the figure.
It becomes a state of 80o.

The roller 9 has a maximum displacement, that is, it moves farthest to the right as indicated by P in the figure. Next, when the roller 9 is driven to rotate further from this state, the rotation of the plate cam 14 attached to the right side begins to be guided and regulated by the guide bar 17, and the entire roller 9 gradually rotates, contrary to the above. It is sent to the left in the figure.

Then, when the rotation angle of the plate cams 13 and 14 reaches 3600 degrees, the state shown in FIG. 2A is restored again, and this process is repeated thereafter. Thus, the roller 9 rotates and simultaneously performs reciprocating motion in the axial direction, that is, horizontal motion in parallel and continuously.

Therefore, the raw millet fed from the chute 5 to the rubbing surface 8 of the skin scraping machine 7 is subjected to a twisting friction pressure by the roller 9 arranged opposite to the scraping surface 8, and this friction pressure causes the raw millet to be twisted. The tough skin of raw millet ruptures and peels off easily. Moreover, the astringent skin that covers the chestnuts is easily peeled off due to the heat treatment in the previous process, so when the hard skin peels off, the chestnuts also come off aesthetically. In addition, in order to prevent the chestnut nuts from being destroyed or damaged in this rubbing process, the softness of the rubber material forming the entire roller 9 or its surface, and the roughness of the roller 9 and the rubbing surface 8 must be adjusted. It is necessary to pay attention to the gap formed between and the correlation between them.

In other words, if the sensitivity of the rubber material is low, the roller pressure will be strong, so if the gap between the roller 9 and the rubbing surface 8 is not set slightly larger than when the sensitivity is high, not only the skin but also the fruit will be damaged. This is because there will be captives who will also destroy things. The raw chestnuts from which the hard skin and astringent skin have been peeled off in this manner are then placed into the bath 18 together with the skin, where they are sorted into fruit and skin.

In the cut tank 18, the skin floats on the water surface and the fruit sinks. Then, only the sunken fruit is carried out by a transport device (not shown) disposed in the hot water tank 18, and then promptly boiled to prevent quality deterioration. As described above, according to the method and apparatus of the present invention, the process of peeling both the tough skin and the astringent skin is mechanized, so that a large amount of raw millet can be peeled quickly and efficiently without the need for troublesome manual work. is possible,
This also greatly contributes to labor saving.

In this embodiment, an example is shown in which plate cams are attached to each side of the roller in order to cause the roller 9 to simultaneously rotate and reciprocate in the mouse direction. However, the plate cams are not necessarily attached to the rollers. It is not necessary to install it on both sides of the roller, for example, it can be installed only on one side, and a device that always biases the roller in one direction (the direction in which the plate cam is installed) is installed on the other side. Alternatively, the roller may be fixed to the drive shaft and reciprocated together with the drive shaft in the direction of the sea bream.

In order to improve the peeling effect, it is also preferable to provide, for example, knurling on the rubbing surface of the peeling machine.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating an example of an apparatus for carrying out the method of the present invention, and FIG. 2 is a diagram illustrating the reciprocating movement of a roller in the same apparatus in the vertical direction.

7... Leather rubbing machine, 8... Rubbing surface, 9... Roller, 10
...Drive shaft, 12...Cam surface, 13, 14...Swash plate cam, 16
, 17...Fixed guide cover.

Figure 1 Figure 2

Claims (1)

[Scope of Claims] 1. Raw chestnuts are heated rapidly to make the astringent skin easy to peel off, and then promptly sent to the rubbing surface 8 of the skin scraping machine 7, and placed opposite to the rubbing surface 8. A method for peeling raw chestnuts, in which a roller 9 is rotated and simultaneously reciprocated in the axial direction, and the astringent skin is peeled together with the hard skin by the frictional pressure. 2. A raw chestnut peeling device comprising a peeling machine 7 and a roller 9 which is disposed opposite to the rubbing surface 8 of the peeling machine 7 and reciprocates in the axial direction at the same time as rotation. 3. The roller 9 can slide in the axial direction of the drive shaft 10, and has cam surfaces 12 located parallel to each other on both sides thereof, and is guided by fixed guide bars 16 and 17 that are in contact with the cam surfaces 12. Claim 2 in which a pair of swash plate cams 13 and 14 whose guidance is regulated by the
A device for peeling raw chestnuts as described in section. 4. The raw chestnut peeling device according to claim 2 or 3, wherein the roller 9 is entirely or at least its surface formed from a heat-resistant and highly elastic material.